Answer:
8/21 = -2/7x
8*7x/21 = -2
56x/21 = -2
56x = -2*21
56x = -42
56x/56 = -42/56
<h2>X = -3/4 , -0.75</h2>
Step-by-step explanation:
Answer:
A. √500
Step-by-step explanation:
Since 500 = 5·100 = 5·10² you can move the 10² out of the √ as 10.
Hence 10√5 = √500
So we're using these rules:
√a·b = √a·√b
and of course
√a² = a (a>0)
Answer:
y=-2x+16
Step-by-step explanation:
since you are given the slope, you can plug it into the equation y=mx+b where m= slope and b= y intercept
you now have y=-2x+b
to find b, you have to plug in the coordinate you are given into the equation
6=-2(5)+b and solve for b
6=-10+b
b=16
since you now have both the slope & y intercept, you can plug them both back into the original equation, y=mx+b and you get
y=-2x+16
if you have any questions, feel free to ask :)
Answer:
Also, find the ratio between their surface areas. ∵ It is cut into eight cubes of equal volume. Let the side of the new cube be x cm. Hence, the ratio between their surface areas is 4: 1.
Each digit of each amount is written in expanded form depending on the position of the digit.
Let's see number 4.875.
Digit 4 is in the place of the units so it is 4 * 1
8 is in the place of the tenths, so it is 8/10 = 8 * 1/10
7 is in the place of the hundreths, so it is 7/100 = 7 * 1 /100
5 is in the place of the thousanths, so it is 5/1000 = 5 * 1 / 1000
So, the number 4.875 written in expanded form using fractions is:
4*1 + 8 * 1/10 + 7 * 1/100 + 5 * 1/100.
Now, see the next amount, 3.125, which using the same procedure leads to:
3 *1 + 1 * 1/10 + 2 * 1/100 + 5 * 1/ 1000
